| Sort by Popularity | Manufacturer | Product(s) | Model | Price+ | Buy Now |
| | Sunlite | UHI S250DD MH TO HPS RETRO USHIO E39 MH to HPS UHI-S250DD MH TO HPS RETRO USHIO (5001175-U)UHI-S250DD MH TO HPS RETRO USHIO... — Ships via FedEx from Brooklyn, New York USA...more. | 5001175-U | $45.63 | |
| | SUNMASTER | LM.400W.U28.NDX LAMP (12/CS) LM.400W.U28.NDX LAMP (12/CASE)LM.400W.U28.NDX LAMP (12/CASE)LM.400W.U28.NDX LAMP (12/CS)17.5 x 13.5 x 10. INLAMPS8.80 LB17.5 x 13.5 x 10. IN8.80 LBLAMPS... This item is sold individually....more. | 901860 | $51.90 | |
| | Philips | MASTER COLOR CMH 250W HPS RETRO Conversion Metal Halide Lamps Operate on HPS Ballasts
Master Color® Ceramic Metal Halid HPS-Retro White®
Optimized for operation on HPS ballasts
Excellent lumen maintenance
Crisp, bright white light with outstanding color rendering
Superior color stability
May not operate on electronic ballasts
... ...more. | 901543 | $52.80 | |
| | Philips | MASTER COLOR CMH 400W HPS RETRO CDM400S51/HOR/4K/ALTO Conversion Metal Halide Lamps Operate on HPS Ballasts
Master Color® Ceramic Metal Halid HPS-Retro White®
Optimized for operation on HPS ballasts
Excellent lumen maintenance
Crisp, bright white light with outstanding color rendering
Superior color stability
May not operate on electronic ballasts
... ...more. | 901551 | $56.40 | |
| | Sunlite | CDM400S51/HOR/4K/ALTO PHILIPS ED18 CMH CDM400S51/HOR/4K/ALTO 12/PACK (SOLD INDIVIDUALLY) PHILIPS (146506-P)CDM400S51/HOR/4K/ALTO 12PK PHILIPSOperates on S51/M169/O
ANSI Designation
MasterColor® Metal Halide 400W
HPS-Retro White™ Horizontal Lamp... — Ships via FedEx from Brooklyn, New York USA...more. | 146506-P | $57.49 | |
| | Ultra Sun | ULTRA SUN™ METAL HALIDE CONVERSION LAMP 1000 WATTS MH1000W/LU T-120 100,000 LUMENS (24/CASE) Ultra Sun Metal Halide Conversion Lamps
The Ultra Sun™ MH Conversion Lamps are designed for those who have an existing HPS ballast that want to also be able to run metal halide lamps without purchasing a separate metal halide ballast. With a 6500°K temperature, these lamps are excellent for the vegetative cycle of plants and full term growing. These lamps have been specifically ... This item is sold individually....more. | 901539 | $59.95 | |
| | Ultra Sun | ULTRA SUN™ METAL HALIDE CONVERSION LAMP 600 WATTS MH600W/LU T-25 57,000 LUMENS (24/CASE) Ultra Sun Metal Halide Conversion Lamps
The Ultra Sun™ MH Conversion Lamps are designed for those who have an existing HPS ballast that want to also be able to run metal halide lamps without purchasing a separate metal halide ballast. With a 6500°K temperature, these lamps are excellent for the vegetative cycle of plants and full term growing. These lamps have been specifically ... This item is sold individually....more. | 901537 | $62.40 | |
| | USHIO | USHIO HILUX GRO AMH 400/OPTI-BLUE 12/CS Ushio MH 400 Conversion Lamp
MH Conversion Lamps operate on HPS Ballasts.
Ushio MH400 Conversion Lamp AMH400 Opti Blue 39,000 Initial lumens T-15
MSRP: $95.95... This item is sold individually....more. | 902915 | $73.21 | |
| | solarMAX | SOLARMAX™ VEGETATIVE CONVERSION 600W MH 7200K 55,000 LUMENS SOLARMAX 600W MH VEG CONVERSIOSOLARMAX 600W MH VEG CONVERSIOSOLARMAX™ VEGETATIVE CONVERSION 600W MH 7200K 55,000 LUMENS12. x 9.25 x 15. INLAMPS5.95 LB12. x 9.25 x 15. IN5.95 LBLAMPS... ...more. | 902830 | $82.33 | |
| | SUNMASTER | LM600W.U25.CDX (6/BOX) LM600W.U25.CDX (6/CASE)LM600W.U25.CDX (6/CASE)LM600W.U25.CDX (6/BOX)12.5 x 9.5 x 15.5 INLAMPS7.40 LB12.5 x 9.5 x 15.5 IN7.40 LBLAMPSSOLD INDIVIDUALLY, BOX SIZE LISTED FOR CONVENIENCE.... ...more. | 901868 | $83.40 | |
| | USHIO | USHIO HILUX GRO AMH 600/OPTI-BLUE 6/CS Ushio MH 600 Conversion Lamp
MH Conversion Lamps operate on HPS Ballasts.
Ushio MH 600 watt conversion lamp AMH600 Opti Blue 47,000 initial lumens. T-25
MSRP: $115.95... This item is sold individually....more. | 902920 | $84.47 | |
| | solarMAX | SOLARMAX™ VEGETATIVE CONVERSION 1000W MH 7200K 90,000 LUMENS SOLARMAX 1000 W MH VEG CONVERSSOLARMAX 1000 W MH VEG CONVERSSOLARMAX™ VEGETATIVE CONVERSION 1000W MH 7200K 90,000 LUMENS12.25 x 9.5 x 15. INLAMPS6.10 LB12.25 x 9.5 x 15. IN6.10 LBLAMPS... ...more. | 902825 | $85.72 | |
| | USHIO | USHIO HILUX GRO AMH 1000/OPTI-BLUE 6/CS Ushio MH1000 Watt Conversion Lamp
MH conversion lamps operate on HPS ballasts.
Ushio MH1000 watt conversion lamp - AMH1000 Opti Blue 109,000 initial lumens. T-25
MSRP: $125.95... This item is sold individually....more. | 902925 | $87.95 | |
| | SUNMASTER | LM1000.U37.DDX (6/CS) LM1000.U37.DDX (6/CASE)LM1000.U37.DDX (6/CASE)LM1000.U37.DDX (6/CS)17. x 12.25 x 13. INLAMPS7.60 LB17. x 12.25 x 13. IN7.60 LBLAMPS... This item is sold individually. — FREE shipping when ordering $75 or more of qualifying items....more. | 901867 | $88.42 | |
| | SUNMASTER | LM1000. U37.NDX LAMP (6/CS) LM1000. U37.NDX LAMP (6/CASE)LM1000. U37.NDX LAMP (6/CASE)LM1000. U37.NDX LAMP (6/CS)17. x 12.25 x 13. INLAMPS7.48 LB17. x 12.25 x 13. IN7.48 LBLAMPS... This item is sold individually....more. | 901865 | $94.80 | |
| | C.A.P. Custom Automated Products | USHIO AMH-400/ Opti Blue Conversion Ushio Bulbs
USHIO introduces "Hi-LUX Gro", a new line of grow lamps to promote enhanced vegetative growth and flowering. The lamps are made to assure consistency in quality and optimized for high performance. Made in Germany by ISO 9001 certified facility.Product Features:- Super high output lamp technology- Optimized spectrum, distribution pattern, lumen output and irradiance- Re... — Ships from Perris, California; Cranston, Rhode Island; Portland, Oregon; Aurora, Colorado; Dallas, Texas USA — FREE shipping when ordering $75 or more of qualifying items....more. | US400CON | $94.99 | |